The Penguin Writer's Guides series provides authoritatives, succinct and easy-to-follow guidance on specific aspects of written English. Whether you need to brush up your skills or get to grips with something for the first time, these invaluable Guides will help you find the best way to get your message across clearly and effectively. This practical one-stop guide explains all the punctuation marks you are ever likely to encounter. From commas to colons, it shows you which marks to use and where to put them in a sentence, with helpful examples of correct and incorrect use and advice for writing on computers. Ideal for both quick reference and in-depth browsing, the guide provides all the tips and techniques you need for accurate punctuation.